Fault Code U0138
Code meaning, symptoms, possible causes, part number, and estimated cost.
U0138
Lost Communication With Terrain Control Module
Code U0138 indicates a loss of communication between the main control module and the Terrain Control Module. This can affect off-road driving modes and 4x4 power distribution.
Part Details
Part Name
Terrain Control Module
Reference P/N (OEM)
N/A
General part number for this fault code — not necessarily for your specific vehicle
Estimated Cost
₪700 - ₪2800
Engine Location
Passenger compartment/Center console
Symptoms
- 4x4/Terrain control warning light illuminated
- Unable to change driving modes
- Drivetrain system error messages
- Poor off-road performance
Possible Causes
- 1Faulty or broken wiring
- 2Loose electrical connector
- 3Defective Terrain Control Module
- 4Software fault in the main control module
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